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ARC: Exception Entry tweaks - SP saved from one location in code
authorVineet Gupta <vgupta@synopsys.com>
Mon, 27 May 2013 13:21:27 +0000 (18:51 +0530)
committerVineet Gupta <vgupta@synopsys.com>
Mon, 17 Jun 2013 13:02:21 +0000 (18:32 +0530)
commitd69f0aedeec88ae56b6a5fdc93eadb07fe948ad3
tree829b5deb46563387d6b5d734ba755792f8c6698btree | snapshot
parentbb673de2bcfc19605fd208d6b31b08f146808aefcommit | diff
ARC: Exception Entry tweaks - SP saved from one location in code

Save k/u mode SP on kernel stack from single place.
This paves way for further simplifications.

There's an overhead of 1 insn for the non-common case of interrupt taken
from kernel mode.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
arch/arc/include/asm/entry.h diff | blob | history
Linux kernel for KaRo TX COM modules